Title :
A Novel Internal Fault Analysis of a Brushless DC Motor Using Winding Function Theory
Author :
Lee, Hyung-Woo ; Kim, Lee Tae-Hyung ; Choi, Changho
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul
Abstract :
This paper presents a winding function-based method to analyze the inter-turn fault in stator windings of a brushless DC (BLDC) motor. It is essential to analyze the behavior of the machine under internal faults and design appropriate protection systems to avoid expensive failures. The winding functions and inductance of stator windings are explained in detail and the informative simulation results based on the winding function theory is provided to analyze currents abnormalities and torque pulsation under turn-to-turn short. Analytical consideration of the stator currents and torque waveform of both healthy and faulty machine is also developed. The detailed simulation results of this paper are the guideline for early detection of internal failures in BLDC motors
Keywords :
brushless DC motors; failure analysis; fault diagnosis; machine windings; torque; BLDC motor; brushless DC motor; early detection; expensive failures avoidance; internal fault analysis; interturn fault; stator currents; stator windings; torque pulsation; torque waveform; turn-to-turn short; winding function theory; winding function-based method; Analytical models; Brushless DC motors; Brushless motors; DC motors; Failure analysis; Guidelines; Inductance; Protection; Stator windings; Torque;
Conference_Titel :
Electric Machines and Drives, 2005 IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-8987-5
Electronic_ISBN :
0-7803-8988-3
DOI :
10.1109/IEMDC.2005.195694
